The bolide of February 10, 2010: Observations in Hidalgo and Puebla, Mexico

on february 10th, 2010, the inhabitant population of some towns near the border between the states of hidalgo and puebla, mexico, heard a strong blast overhead and felt seismic tremors and roof and windows vibration. at tulancingo, hidalgo, 25 km from the explosion zone, visual reports of a bolide and thunder-like sounds were described. a possible explanation may be related with re-entry of spatial debris number 33006 from satellite cosmos 2421. we describe interviews with witnesses. an alternative hypothesis is a meteoritic origin of the bolide.